MULTIVARIATE STUDIES ON GROWTH CHARACTERISTICS OF Pinus roxburghii IN MID HILL CONDITIONS OF HIMACHAL PRADESH
Loading...
Date
2020-07
Authors
Journal Title
Journal ISSN
Volume Title
Publisher
NAUNI,UHF
Abstract
ABSTRACT
The data on present statistical investigation entitled “Multivariate studies on growth
characteristics of Pinus roxburghii in mid hill conditions of Himachal Pradesh” was collected
from the Department of “ Tree Improvement and Genetic Resources”, Dr. Y S Parmar University of
Horticulture and Forestry, Nauni (Solan), Himachal Pradesh during the year 2018. Twenty families
were randomly selected from sixty families planted in University Research Farm. The maximum total
biomass was observed in family Kopra t2 which was statistically at par with family Mansa mallon and
Mansoo t5. The phenotypic coefficients of variation (PCV) were high for E.W crown spread
(36.38%), N.S crown spread (22.84%), crown height (20.57%) and the genotypic coefficients of
variation (GCV) were high for E.W crown spread (30.68%), crown height (20.57%). Eleven families
were grouped in cluster III followed by six families in cluster IV, two families in Cluster II and one
family in cluster I. Maximum number of families were accommodated in cluster III. Seven out of
twenty factors explained 20.27%, 16.26%, 11.65%, 11.56%, 9.13%, 6.18% and 5.69% variation and
together they account for 80.71% of total variation. High heritability were estimated for needle length
(99.99%), moisture content (99.98%), diameter at breast height (99.98%), crown height (99.97%),
crown length (99.96%), number of stomata (99.96%), tree height (99.94%), tracheid length (99.66%),
needle thickness (99.56%), bark thickness (99.37%), girth of cone from contour (98.61%), wood
specific gravity (97.38%) and length of cone (77.06%) and and genetic advance for bole biomass
(13.11%) and total biomass (11.77%). Hence these characters should be relied upon for selection
Description
Keywords
null